One of the most common issues people experience using Foundry VTT is a grey screen error, or “grey screen of death”. This is where a Foundry VTT game refuses to load or display properly, and instead becomes stuck on the titular “grey screen”.
Below are the most common reasons behind grey screen issues for Foundry VTT games.
The most common reason for grey screen issues are problems with hardware acceleration. Rarely, this can happen to an entire group within a game, but is most often restricted to a player or two within the game. We have a guide to fixing hardware acceleration issues here.
Worlds that become too large can have issues loading, or even fail to load at all- producing an effect very similar to grey screen issues. We have a guide to diagnosing and fixing this issue here.
Sometimes, module conflicts/bugs can cause a world to load improperly, or fail to load at all. We recommend enabling safe configuration if the prior solutions are unable to fix grey screen errors. If safe configuration fixes the grey screen error, there is a module conflict/bug.